Girodisc Rotors

Girodisc Alfa Romeo Giulia, Stelvio Quadrifoglio Rear Iron Rotor Conversion Transform the braking performance of your Giulia or Stelvio Quadrifoglio with Girodisc’s lightweight two-piece rear iron rotor conversion. Designed to replace the factory carbon-ceramic system, this setup maintains OEM fitment while offering better serviceability and cost efficiency—perfect for high-performance street and track driving. Direct Bolt-On Iron Rotor Replacement The Girodisc system is a direct replacement for the original carbon-ceramic rear rotors, requiring no modifications or special adapters. The central hat is precision-machined from U.S.-sourced 6061-T6 aluminum, while the iron rotor rings are Girodisc’s proprietary cast iron, poured and machined entirely in the USA. The curved vane internal design actively pumps cooling air through the disc, reducing fade and improving heat dissipation under heavy use. Features • Direct replacement for OEM carbon-ceramic rear rotors• Made from high-carbon cast iron for excellent thermal management• Lightweight billet 6061-T6 aluminum hats with anodized finish• Floating mount system allows for thermal expansion without warping• 10 cadmium-plated alloy steel drive pins secure the hat and ring• Anti-noise spring washers reduce rattle while maintaining float• Fully rebuildable design—replace only the iron rings when needed• Sold and priced in pairs Vehicle Fitment Alfa Romeo Giulia Quadrifoglio (2017–present)Alfa Romeo Stelvio Quadrifoglio (2018–present)Compatible with factory carbon-ceramic brake systems. Girodisc A2-209 Rear Rotor FAQs: Can these Girodisc rotors replace the factory carbon-ceramic setup? Yes, they’re specifically designed as a direct bolt-on conversion from the OEM carbon-ceramic rotors to a more serviceable iron setup. Do they work with the stock calipers and pads? Absolutely. The Girodisc system retains the OEM Brembo calipers and uses standard pad shapes for easy compatibility. Are there performance benefits besides cost savings? The iron rotors offer superior heat absorption and more consistent braking feedback, especially beneficial for track or spirited street driving. Will switching to iron rotors affect ABS or stability systems? No, Girodisc’s engineering ensures full compatibility with all factory electronic systems, maintaining perfect brake bias and function. Upgrade your Alfa Romeo’s stopping power and serviceability with Girodisc’s rear iron rotor conversion. Experience the confidence of precise, fade-free braking on every drive.

Girodisc Chevrolet Camaro SS, ZL1 Rear Rotors Upgrade your Camaro’s stopping power with Girodisc’s lightweight two-piece rear rotors. Designed as a direct replacement for factory units, these precision-engineered rotors reduce unsprung weight while improving braking consistency and cooling performance for both street and track use. Lightweight, Track-Proven Performance Each Girodisc rotor is crafted from proprietary cast iron with a billet 6061-T6 aluminum hat, machined and assembled in the USA. The floating two-piece design allows the rotor to expand under heat without warping or distortion, maintaining consistent pad contact and pedal feel. The result is better modulation, reduced fade, and faster recovery lap after lap. Features • Direct replacement for factory rear rotors – no modifications required• Aircraft-grade 6061-T6 aluminum hats with durable anodized finish• Proprietary high-carbon cast iron discs made and machined in the USA• Floating mount system using cadmium-plated alloy steel drive pins• Curved directional vanes promote superior air flow and heat dissipation• Lighter than OEM rotors, improving suspension response and acceleration• Fully serviceable design – only replace iron rings when worn Vehicle Fitment Chevrolet Camaro SS (2016–present)Chevrolet Camaro ZL1 (2017–present)Fits models equipped with factory Brembo rear calipers. Girodisc A2-211 Rear Rotor FAQs: Do these Girodisc rotors fit both manual and automatic Camaro SS models? Yes, they fit all 2016+ Camaro SS and ZL1 models equipped with the factory Brembo brake system, regardless of transmission. Will I need to upgrade my brake pads when installing these? It’s highly recommended to use a fresh set of pads compatible with iron rotors to ensure proper bedding and optimal braking performance. How much lighter are Girodisc rotors compared to OEM units? Each rotor typically weighs 3–5 lbs less than the OEM cast iron equivalent, significantly reducing unsprung and rotational mass. Are Girodisc rotors suitable for daily driving? Absolutely. Girodisc rotors deliver exceptional street manners while being durable enough for heavy track use. Enhance your Camaro’s braking performance and shed unnecessary weight with Girodisc’s precision-engineered rear rotors. Order today and experience smoother, stronger stops on every drive.

Girodisc Rear Brake Rotors – Hyundai Veloster / Elantra / Kona / i30 N The Girodisc A2-217 Rear Rotor Kit offers a direct bolt-on performance upgrade for Hyundai’s high-performance N models, including the Veloster N, Elantra N, Kona N, and i30 N. These lightweight two-piece rotors are designed to deliver exceptional cooling, reduced unsprung weight, and race-level consistency without compromising everyday drivability or OEM compatibility. Precision Engineering for Hyundai’s N Performance Line Each Girodisc A2-217 rotor combines a CNC-machined 6061-T6 aluminum hat with a proprietary cast-iron friction ring. The two-piece floating design allows the rotor to expand and contract freely under heat, maintaining perfect alignment and preventing cracking or warping. The curved-vane internal geometry acts as a centrifugal air pump, drawing cooling air through the rotor for maximum temperature control under demanding conditions. Features • Direct-fit upgrade for Hyundai Veloster N, Elantra N, Kona N, and i30 N• Two-piece floating rotor design: cast-iron ring + 6061-T6 aluminum hat• Curved-vane internal design improves airflow and cooling efficiency• Floating mount system with cadmium-plated drive pins and anti-noise spring washers• Lightweight aluminum hat reduces unsprung and rotational mass• Retains OEM brake bias and ABS calibration• Reusable hats—replace only the iron rings when worn• Sold/priced per pair Vehicle Fitment • Hyundai Veloster N – Rear• Hyundai Elantra N – Rear• Hyundai Kona N – Rear• Hyundai i30 N – Rear• Compatible with OEM calipers and hardware• Direct bolt-on installation; no modifications required Girodisc A2-217 Rear Rotors – Hyundai Veloster / Elantra / Kona / i30 N FAQs Do these rotors fit stock calipers? Yes. The Girodisc A2-217 rear rotors bolt directly to OEM calipers, maintaining factory brake bias and ABS performance. What benefits do two-piece rotors provide? The two-piece floating design improves cooling, reduces weight, and allows for thermal expansion without warping, ensuring consistent braking under repeated heavy use. Will these make noise? No. The anti-noise spring washers prevent rattling when cold while allowing full float during high-temperature operation. Are replacement rings available? Yes. Girodisc offers replacement cast-iron rings so you can reuse your aluminum hats, lowering maintenance costs. How do these compare to OEM rotors? Girodisc rotors are lighter, stronger, and run cooler than OEM units, offering smoother pedal feel and superior fade resistance. Are these sold as a pair? Yes. The Girodisc A2-217 rotors are sold and priced as a matched rear pair. Enhance your N-car braking performance with the Girodisc A2-217 2-Piece Rear Brake Rotors—engineered for the Hyundai Veloster, Elantra, Kona, and i30 N to deliver race-level durability and street-ready refinement.

Girodisc Rear Brake Rotors – BMW F8X M2 / M3 / M4 The Girodisc A2-220 Rear Rotor Kit is a direct replacement for factory carbon ceramic or iron rotors on the BMW F8X platform, including the M2, M3, and M4. Designed for drivers who demand superior thermal control and serviceability, these 380mm two-piece rotors deliver exceptional braking consistency, reduced weight, and race-proven reliability—without any modifications required. Convert Carbon Ceramic to Iron with OEM Precision For vehicles originally equipped with BMW’s carbon ceramic rotors, this Girodisc kit offers a straightforward conversion to high-performance iron rotors. The system bolts directly to the car using the factory calipers and hardware, maintaining OEM brake bias and ABS calibration. Girodisc’s curved-vane design and floating mount system ensure cooler operation, quieter performance, and reduced maintenance costs compared to carbon ceramics. Features • Direct replacement for 380mm BMW F8X M2 / M3 / M4 rear rotors• Converts carbon ceramic brakes to iron rotors with no modifications• Two-piece floating design: 6061-T6 aluminum hat + proprietary cast-iron ring• Curved-vane geometry for superior heat dissipation• Floating mount system with cadmium-plated drive pins and anti-noise spring washers• Class 12.9 hardware for high torque load capacity• Reusable aluminum hats – replace iron rings when worn• Reduced unsprung and rotational mass for improved handling• Sold/priced per pair Vehicle Fitment • BMW F80 M3 / F82–F83 M4 (including CS with optional carbon ceramic package – gold calipers)• BMW F87 M2 / M2 Competition (red or silver calipers)• BMW F87 M2 CS (optional carbon ceramic package – gold calipers)• Note: Vehicles with blue calipers require a different rotor size, available separately. Girodisc A2-220 Rear Rotors – BMW F8X M2 / M3 / M4 FAQs Do these rotors fit OEM calipers? Yes. The A2-220 rotors bolt directly to factory calipers and hubs with no modifications needed. Can I use these to replace carbon ceramic rotors? Absolutely. This kit is designed to replace OEM carbon ceramics with Girodisc’s high-performance iron rotors. It’s a simple bolt-on conversion that reduces cost and improves heat capacity. Do I need to change brake pads? Yes. When converting from carbon ceramic to iron rotors, use pads specifically designed for iron discs to ensure proper friction and performance. What are the benefits of a two-piece floating design? The floating mount system allows for thermal expansion without warping or cracking, maintaining smooth, consistent braking and extending rotor life. Are replacement rings available? Yes. Girodisc offers replacement cast-iron rings that allow you to reuse your aluminum hats and hardware, reducing long-term cost. Are these rotors noisy? No. Anti-noise spring washers prevent rattling when cold while allowing proper float when hot. Upgrade your braking performance and reduce long-term maintenance costs with the Girodisc A2-220 2-Piece Rear Brake Rotors (380mm)—precision-engineered for BMW’s F8X M2, M3, and M4 platforms.

Girodisc Rear Brake Rotors – Ferrari F40 The Girodisc A2-221 Rear Rotor Kit is a precision-engineered, direct replacement for the factory rear rotors on the legendary Ferrari F40. Designed to deliver superior heat management, reduced unsprung mass, and uncompromised performance, these lightweight two-piece rotors bring modern racing technology to one of the most iconic supercars ever built. Modern Engineering for a Legendary Supercar Each Girodisc A2-221 rotor combines a CNC-machined 6061-T6 aluminum hat with Girodisc’s proprietary cast-iron friction ring. The floating two-piece design allows the iron ring to expand under heat without warping or coning, maintaining consistent pedal feel and reducing stress on the braking system. The curved-vane internal geometry acts as a centrifugal air pump, improving airflow through the rotor for cooler, more stable braking under extreme conditions. Features • Direct replacement for OEM Ferrari F40 rear rotors• Two-piece floating design: cast-iron friction ring + 6061-T6 aluminum hat• Curved-vane internal construction for enhanced cooling efficiency• Floating mount system with cadmium-plated drive pins and anti-noise spring washers• Class 12.9 cap screws and hardened washers for strength and reliability• Reusable aluminum hats – replace only the iron rings when needed• Reduces unsprung weight and improves handling response• Sold/priced per pair Vehicle Fitment • Ferrari F40 (1987–1992) – Rear• Direct OEM replacement, compatible with factory calipers and ABS• No modifications required for installation Girodisc A2-221 Rear Rotors – Ferrari F40 FAQs Do these rotors fit directly without modification? Yes. The Girodisc A2-221 rotors bolt directly to the factory calipers and hubs without requiring any changes to your OEM components. What makes these rotors better than stock? The two-piece floating design reduces weight, improves cooling, and prevents distortion under high temperatures for more consistent braking and longer life. Are replacement rings available? Yes. Girodisc offers replacement cast-iron rings so you can reuse your existing aluminum hats and hardware, reducing long-term maintenance costs. Do these rotors make noise? No. Anti-noise spring washers are used to eliminate rattling at low speeds while maintaining full float during heat expansion. Are they sold individually or as a set? The Girodisc A2-221 rear rotors are sold as a matched pair for the rear axle. Will they affect braking balance or ABS? No. These rotors maintain the factory bias and ABS function while offering improved performance and reliability. Upgrade your Ferrari F40 with the Girodisc A2-221 2-Piece Rear Brake Rotors—modern performance engineering built to complement the timeless design and racing pedigree of Maranello’s most celebrated icon.

Girodisc Rear Brake Rotors – Alfa Romeo Quadrifoglio / Maserati The Girodisc A2-224 Rear Rotor Kit is a high-performance, direct replacement for factory rear rotors on Alfa Romeo Quadrifoglio and select Maserati models. Built to withstand extreme heat and aggressive driving, these lightweight two-piece rotors improve cooling efficiency and responsiveness while maintaining OEM brake balance and ABS function. Lightweight Performance Meets Italian Engineering Each rotor is crafted using Girodisc’s precision two-piece floating design—featuring a CNC-machined 6061-T6 aluminum hat paired with a proprietary cast-iron friction ring. The curved vane internal geometry acts as a centrifugal air pump, forcing cool air through the disc to reduce heat, fade, and warping during track or spirited driving. The result: consistent, confidence-inspiring braking performance without compromising everyday drivability. Features • Direct-fit replacement for Alfa Romeo Quadrifoglio and select Maserati rear rotors• Two-piece floating rotor design: cast-iron ring + 6061-T6 aluminum hat• Curved-vane internal structure for superior heat dissipation• Floating mount with cadmium-plated steel drive pins and anti-noise spring washers• Class 12.9 fasteners with hardened washers for maximum strength• Reusable aluminum hats – only replace iron rings when worn• Reduces unsprung weight for better handling and suspension response• Sold/priced per pair Vehicle Fitment • Alfa Romeo Giulia Quadrifoglio – Rear• Alfa Romeo Stelvio Quadrifoglio – Rear• Maserati Ghibli / Levante / Quattroporte (select trims) – Rear• Compatible with OEM calipers and ABS• Direct bolt-on installation with no modifications Girodisc A2-224 Rear Rotors – Alfa Romeo Quadrifoglio / Maserati FAQs Do these rotors fit the stock calipers? Yes. The Girodisc A2-224 rear rotors bolt directly to the OEM calipers without modification, maintaining proper brake bias and system balance. What benefits do two-piece rotors offer? They significantly reduce unsprung weight, improve cooling, and allow the rotor to expand under heat without warping or coning, resulting in consistent braking and longer life. Can I reuse the hats? Yes. When the iron rings wear out, simply replace the rings while reusing the aluminum hats and hardware for a cost-effective rebuild. Are replacement rings available? Absolutely. Girodisc offers replacement iron rings that fit perfectly onto your existing aluminum hats. Do these rotors make noise? No. The anti-noise spring washers eliminate rattles when cold while preserving full float during heat cycles. Are these rotors lighter than OEM? Yes. The aluminum hat reduces rotational mass and unsprung weight, improving responsiveness and handling. Experience superior braking performance with the Girodisc A2-224 2-Piece Rear Brake Rotors—precision-engineered for Alfa Romeo and Maserati enthusiasts who demand the perfect balance of comfort, control, and performance.

Girodisc Rear Brake Rotors – Nissan GT-R The Girodisc A2-232 Rear Rotor Kit is a direct replacement for the OEM rear rotors on the Nissan GT-R. Designed to deliver race-proven performance with factory fitment, these lightweight two-piece rotors enhance cooling efficiency, reduce unsprung weight, and maintain perfect compatibility with stock calipers and ABS. Lightweight Performance. Race-Ready Engineering. Each Girodisc rotor combines a precision-machined 6061-T6 aluminum hat with a proprietary cast-iron ring, both sourced and built in the USA. The curved vane internal geometry acts as a centrifugal air pump, forcing cooling air through the disc to reduce temperatures and prevent fade under aggressive driving. The floating mount system allows the rotor ring to expand naturally under heat without warping or coning, maintaining consistent pedal feel and braking balance. Features • Direct replacement for OEM Nissan GT-R rear rotors• Two-piece floating design: cast-iron rotor ring + 6061-T6 aluminum hat• Curved-vane internal cooling for heat management• Floating mount system with cadmium-plated drive pins and class 12.9 hardware• Anti-noise spring washers eliminate rattle when cold• Reduces unsprung and rotational mass• Maintains factory ABS and brake bias• Reusable hats – replace rings when worn• Sold/priced per pair Vehicle Fitment • Nissan GT-R (All R35 models) – Rear• Direct OEM bolt-on replacement• Works with factory calipers and ABS Girodisc A2-232 Rear Rotors – Nissan GT-R FAQs Do these rotors fit the stock calipers? Yes. The A2-232 rotors bolt directly to OEM calipers and retain factory brake balance and ABS performance. What’s the benefit of a floating two-piece design? The floating mount allows for thermal expansion and self-centering, improving braking consistency and minimizing stress that leads to rotor cracking or distortion. Are replacement rings available? Yes. Girodisc offers replacement rings that allow you to reuse the aluminum hats and hardware for cost-effective long-term maintenance. Do these rotors make noise? No. Anti-noise spring washers eliminate rattle when cold while preserving the benefits of a true floating design under heat. Are these rotors lighter than OEM? Yes. The aluminum hat significantly reduces unsprung and rotational mass, improving acceleration, handling, and ride quality. Are they sold individually or as a set? The Girodisc A2-232 rotors are sold as a pair for the rear axle. Upgrade your Nissan GT-R with the Girodisc A2-232 2-Piece Rear Brake Rotors—built for drivers who demand precision, performance, and reliability on both street and track.

Girodisc  Rear Brake Rotors – Porsche 991 GT3 Cup Car The Girodisc A2-238 Rear Rotor Set (380x30mm) is a direct replacement for the OE cup car discs used on the Porsche 991 GT3 Cup. Engineered for performance and reliability under extreme track conditions, these rotors bolt directly to your car and work seamlessly with the original calipers and ABS system—no modifications required. Race-Proven Two-Piece Design Each Girodisc rotor is designed and manufactured in the USA with precision components to ensure durability and superior thermal management. The central hat section is CNC-machined from U.S.-sourced 6061-T6 aircraft-grade aluminum, while the outer ring is made from Girodisc’s proprietary cast iron alloy, poured and machined entirely in-house. The curved vane design actively pumps cooling air through the disc, reducing temperatures during intense braking to prevent fade and warping. A2-238 Girodisc 380mm 2pc Rear Brake Rotor Features • Direct replacement for OEM Porsche 991 GT3 Cup rear discs (380x30mm)• Two-piece floating rotor design for optimal heat management• 6061-T6 aluminum hats machined from U.S.-sourced billet• Proprietary cast iron rotor rings with curved vane cooling geometry• 12 high-strength alloy steel drive pins with cadmium plating• Anti-noise spring washers eliminate rattle while maintaining full float• Class 12.9 hardware and hardened washers for secure mounting• Significantly reduces unsprung and rotational mass• Reusable hats—replace only rings when worn• Sold/priced per pair• Optional center-lock drive pin kit available A2-238 Girodisc 380mm 2pc Rear Brake Rotor Vehicle Fitment • Porsche 991 GT3 Cup (All model years) – Rear• Fits OEM calipers and ABS• Center-lock wheel option available upon request A2-238 Girodisc 380mm 2pc Rear Brake Rotor FAQs Do these rotors fit directly without modifications? Yes. The Girodisc A2-238 system is a direct bolt-on replacement for OEM rear discs on the 991 GT3 Cup. What is the advantage of a two-piece floating rotor? The floating design allows the iron rotor ring to expand under heat without stressing the aluminum hat, improving performance, reducing weight, and preventing cracking or distortion. Can I reuse the aluminum hats? Yes. Once the cast iron rings wear out, you can replace just the rings and retain the existing hats and hardware. Do these rotors make noise? No. The use of anti-noise spring washers ensures quiet operation even when cold, while maintaining true floating capability under heat. Are these rotors sold individually? No. The Girodisc A2-238 rotors are sold as a pair for the rear axle. Is a center-lock version available? Yes. Girodisc offers a specific drive pin option for vehicles equipped with OEM center-lock hubs—select this option when ordering. Enhance your Porsche 991 GT3 Cup’s braking performance with the Girodisc A2-238 2-Piece Rear Brake Rotors (380x30mm)—precision-engineered, race-proven, and built to handle the most demanding conditions on track.

Competition Motorsport is an authorized dealer for Girodisc products. As one of the largest stocking dealers in the country, we ship most Girodisc products the same or next business day to ensure we meet your delivery deadline. Fits Chevrolet Camaro ZL1 Gen 5 The Girodisc system is a direct replacement for the OE disc, they will bolt directly to the car and work with OE calipers perfectly. By upgrading your brakes with lightweight high performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. The central hat section of the Girodisc rotor is made from strictly USA-sourced 6061-T6 aircraft specification aluminum. The disc is made from Girodisc's own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved-vane design, developed in racing to act as a centrifugal pump forcing cool air through the disc. The disc and hat have a floating mount system, which utilizes 12 high-strength alloy steel drive pins, manufactured in the US by Girodisc and cadmium plated for long-lasting corrosion resistance. These pins take the loads from braking while maintaining the axial and radial float between the hat and disc. They are secured by class 12.9 cap screws and hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise springs on the disc side, allowing the iron disc to expand as it heats up while eliminating the rattle and noise commonly associated with floating rotors. This float also allows the rotor to self center between the brake pads. Once the Girodisc system is in place, you simply replace the cast iron discs when needed. This reduces cost over time by allowing you to re-use the aluminum central hats. Sold/priced per pair

Girodisc  Rear Iron Rotor Conversion – Mercedes E63 / CLS63 / SLS The Girodisc A2-240 Rear Iron Rotor Conversion Kit converts your factory steel rear rotors to a high-performance two-piece floating iron rotor system for Mercedes E63, CLS63, and SLS models. It allows you to upgrade your brake system without replacing OEM hub components—delivering improved thermal management, reduced weight, and far better consistency under track or aggressive use. Upgrade from Steel to Performance Iron Mercedes E63, CLS63, and SLS vehicles often come with large, heavy steel rear rotors. The Girodisc A2-240 conversion lets you retain the stock hub assembly but convert to lightweight, high-quality cast-iron friction rings mounted on a 6061-T6 aluminum hat. This floating rotor system improves cooling, allows thermal expansion, and reduces unsprung and rotational mass while maintaining OEM caliper compatibility. Features • Conversion kit for Mercedes E63, CLS63, and SLS rear rotors• Converts factory rotor hubs to floating two-piece design• Machined 6061-T6 aluminum hat compatible with OEM hub• Proprietary cast-iron friction rings poured and machined in-house• Floating mount system with alloy steel drive pins and anti-noise spring washers• Cadmium-plated hardware and class 12.9 fasteners included• Reduces weight, improves cooling, and enhances brake response• Rings are replaceable—reuse hats and hardware in future• Sold as a complete kit Vehicle Fitment • Mercedes C-class E63 AMG – Rear• Mercedes CLS63 AMG – Rear• Mercedes SLS AMG – Rear• Designed to mate with existing hubs and calipers without modification Girodisc A2-240 Rear Iron Rotor Conversion FAQs Will I need new hubs or calipers? No. The A2-240 kit is designed to adapt to OEM hubs and calipers for a seamless conversion. What advantages does the floating two-piece design offer over stock steel rotors? The floating design allows thermal growth, improves cooling under load, and reduces unsprung and rotational mass, all contributing to better pedal feel and reduced fade. Are the ring components replaceable? Yes. When the iron rings wear out, you can replace them while reusing the aluminum hats and hardware to lower long-term costs. Is this kit sold per axle? Yes. The A2-240 conversion comes as a complete rear rotor kit for both sides of the axle. Will this affect my ABS or brake balance? No. This is a conversion that maintains the original geometry and balance while providing enhanced performance characteristics. Convert your Mercedes E63, CLS63, or SLS rear braking setup to next-level performance with the Girodisc A2-240 Rear Iron Rotor Conversion. Enjoy reduced weight, improved thermal control, and enhanced braking confidence under load.

Girodisc Rear Brake Rotors – Corvette C8  The Girodisc A2-242 Rear Rotor Kit is a direct replacement upgrade for the factory C8 Z51 rear brake discs. Designed to bolt directly to the car without modification, these lightweight high-performance rotors deliver better heat management, improved braking consistency, and reduced unsprung weight—all while maintaining the factory brake bias and ABS performance. Precision-Built Performance for the C8 Z51 The Girodisc A2-242 system replaces the OEM one-piece rotor with a two-piece floating design that improves cooling and reduces rotational mass. The central hat section is CNC-machined from U.S.-sourced 6061-T6 aircraft-grade aluminum, while the rotor rings are cast from Girodisc’s proprietary high-carbon iron alloy. The curved vane internal geometry acts as a centrifugal air pump to cool the discs during aggressive track driving, preventing fade and extending pad life. Features • Direct bolt-on replacement for Corvette C8 Z51 rear rotors• Two-piece floating rotor design for improved cooling and serviceability• Proprietary cast-iron rings poured and machined in the USA• Lightweight 6061-T6 aluminum hat reduces unsprung weight• Curved vane internal design for efficient heat dissipation• 10 high-strength alloy steel drive pins with anti-noise spring washers• Cadmium-plated hardware and class 12.9 cap screws• Reusable aluminum hats—only replace rings when worn• Sold/priced per pair Vehicle Fitment • Chevrolet Corvette C8 Z51 (All Years) – Rear• Compatible with factory calipers and ABS• Maintains OEM brake balance and fitment Girodisc A2-242 Rear Rotors – Corvette C8 Z51 FAQs Do these rotors fit the stock calipers? Yes. The Girodisc A2-242 rotors bolt directly to the OEM calipers with no modifications required. What are the benefits of a two-piece floating rotor design? The floating mount allows the rotor to expand freely with heat, improving pedal feel, reducing cracking, and extending component life. Will these rotors affect my ABS or brake bias? No. They’re engineered to maintain the factory bias and ABS tuning while improving overall performance. Are replacement rings available? Yes. Girodisc offers replacement iron rings so you can reuse your aluminum hats and hardware, lowering long-term maintenance costs. Do these rotors make noise? The floating hardware uses anti-noise spring washers to eliminate rattling when cold while maintaining full float under heat. Are these sold individually? No. The Girodisc A2-242 rotors are sold as a matched pair for the rear axle. Upgrade your Corvette C8 Z51 with the Girodisc A2-242 2-Piece Rear Brake Rotors—precision-engineered for superior cooling, weight reduction, and unmatched stopping performance lap after lap.

Girodisc Rear Rotors – Mercedes E63 / GT53 The Girodisc A2-248 rear rotor set offers a direct-fit upgrade for the Mercedes E63 and GT53 platforms. Combining track-grade engineering with bolt-on simplicity, these two-piece rotors deliver better heat management, consistent brake feel, and reduced rotational weight—while retaining compatibility with OEM calipers and ABS systems. Purpose-Built for Street and Track Use Each rotor uses a curved-vane internal geometry to actively draw cooling air through the disc, preventing hotspots under hard braking. The hub is machined from 6061-T6 aluminum while the friction ring is cast from Girodisc’s proprietary iron alloy—machined in-house from start to finish. A floating mount system with drive pins and anti-noise washers allows expansion and self-centering, enhancing consistency and longevity. Features • Designed for Mercedes E63 / GT53 rear axle fitment• Two-piece rotor design: lightweight aluminum hub + machined cast-iron ring• Curved-vane internal airflow geometry• Floating mount with alloy steel drive pins and anti-noise washers• Reduced unsprung and rotational mass for sharper response• Repairable design: replace ring, reuse hub and hardware• Sold/priced per pair Vehicle Fitment • Mercedes-AMG E63 — rear axle• Mercedes-AMG GT 53 — rear axle• Always confirm rotor diameter, bolt pattern, and caliper clearance before ordering Girodisc A2-248 Rear Rotors FAQs Do they bolt to stock calipers? Yes, the A2-248 system is designed for OEM compatibility—no modifications needed. How does the floating design benefit braking? Float allows the disc to expand and self-center under thermal load, reducing stress and improving pedal consistency. Are replacement rings available? Yes. When rings wear out, you can replace just the ring while reusing the hub and hardware to save cost. Is the rotor sold individually or as a pair? The A2-248 kit includes both rear rotors and is sold per pair. What kind of pads and fluid should I use? To get the most out of these rotors, use a high-temperature brake fluid and performance brake pads; they help manage fade and keep braking consistent over multiple laps. Choose the Girodisc A2-248 for your Mercedes E63 or GT53 and enjoy advanced braking performance, precision engineering, and long-term serviceability built for the road and track.

Girodisc Mercedes E63 / GT53 Rear Rotors (Dimpled & Slotted) The Girodisc A2-248DS Rear Rotors are a direct replacement for the OEM discs on the Mercedes E63 and GT53. These precision-machined, dimpled and slotted rotors deliver superior braking performance, enhanced cooling, and a substantial reduction in weight. Designed to bolt directly to the car with no modifications required, they maintain the factory brake bias and ABS efficiency while improving response and durability. Performance Upgrade & Weight Reduction Each Girodisc assembly is engineered to be approximately 8.1 lbs lighter per rotor than the factory units (16.6 lbs vs. 24.7 lbs). This significant reduction in unsprung and rotational mass allows for improved acceleration, sharper turn-in, and better suspension feedback. Engineering Excellence The central hat section of the rotor is crafted from 6061-T6 aircraft-grade aluminum, precision-machined and anodized for strength and corrosion resistance. The outer disc is made from Girodisc’s proprietary high-carbon cast iron alloy, poured and machined in the USA to exacting tolerances. The dimpled and slotted surface design improves pad bite, reduces glazing, and enhances gas evacuation during high-temperature operation. Floating Mount System Girodisc rotors utilize a fully floating mount system that connects the iron ring to the aluminum hat using 10 cadmium-plated steel drive pins. The assembly is secured by class 12.9 cap screws and hardened washers, allowing axial and radial movement as the rotor expands under heat. Anti-noise spring washers eliminate rattle and vibration, maintaining quiet operation while preserving true race-grade performance. Vehicle Fitment Mercedes-Benz E63 AMG (All variants compatible with iron rotor setup) Mercedes-Benz GT53 (All compatible rear applications) Technical Specifications Part Number: A2-248DS Position: Rear Design: Dimpled & Slotted Material: High-carbon cast iron rotor ring with 6061-T6 aluminum hat Vane Design: Curved directional vanes Weight Reduction: 8.1 lbs per rotor vs OEM Sold/Price: Per pair FAQs for Girodisc A2-248DS Are these a direct fit? Yes. The Girodisc A2-248DS rotors bolt directly to the OEM hubs and work with the factory calipers—no modifications required. What’s the benefit of dimpled and slotted rotors? This design enhances pad cleaning, improves initial bite, and reduces brake fade during high-temperature driving. Do they make noise? Girodisc’s floating design uses anti-noise spring washers for quiet, street-friendly operation while retaining track-ready performance. Are the rotors rebuildable? Yes. The iron rings are replaceable—simply reuse the aluminum hats and replace the rings when worn. Upgrade your Mercedes E63 or GT53 with Girodisc dimpled and slotted rear rotors for the perfect balance of lightweight precision, durability, and performance on the road or track.

Porsche GT2 RS Clubsport Front Rotors The Girodisc system is a direct replacement for the OE front rotors on the Porsche GT2 RS Clubsport. Designed and engineered for the most demanding track environments, these lightweight 2-piece floating rotors bolt directly to the car with no modifications required. They maintain OEM brake bias and ABS functionality while delivering superior cooling, reduced fade, and exceptional braking precision under extreme racing conditions. Motorsport-Grade Design, Precision-Built in the USA Each Girodisc rotor assembly is meticulously engineered and manufactured in-house using premium materials. The hat is CNC-machined from 6061-T6 aircraft-grade aluminum for strength and reduced weight, while the rotor rings are made from Girodisc’s proprietary high-carbon iron alloy. The 380mm diameter and 32mm thickness provide greater thermal capacity, ensuring consistent performance through repeated high-speed braking events. The floating mount system allows for controlled expansion under heat, eliminating warping and vibration. Vehicle Fitment Porsche 911 GT2 RS Clubsport (991.2) Porsche 935 (991-based, 2019–2021) Features Direct OEM Replacement: Installs directly to factory hubs and calipers with no modifications required. High Thermal Capacity: Large 380x32mm rotor design for superior heat management and fade resistance. Lightweight Two-Piece Construction: Reduces unsprung and rotational mass for sharper handling and acceleration. Curved Vane Cooling: Internal directional vanes pump air through the rotor to maintain consistent braking temperatures. Floating Mount System: Twelve high-strength drive pins secured with anti-noise spring washers allow the rotor to expand under heat while preventing rattle. Made in the USA: Fully machined and assembled from U.S.-sourced materials to meet professional racing standards. FAQs – Porsche GT2 RS Clubsport Front Rotors Are these rotors compatible with OEM calipers? Yes, they bolt directly to the factory Porsche calipers with no modifications required. Can they be used on the street? While designed for track use, they function flawlessly for limited street driving as well. Do they improve performance over OEM rotors? Yes—these rotors offer better cooling, reduced fade, and lighter rotational weight for more consistent lap times. Are they sold as a pair? Yes, all Girodisc rotors are sold and priced per pair. Upgrade your Porsche GT2 RS Clubsport with Girodisc’s 2-piece floating front rotors. Experience unmatched braking consistency, reduced fade, and the durability demanded by world-class motorsport performance.

 McLaren 620R Rear Rotors The Girodisc system is a direct replacement for the OE rear rotors on the McLaren 620R. Designed for uncompromising track and street performance, these lightweight 2-piece floating rotors bolt directly to the car without any modifications. They maintain factory brake bias and ABS calibration while significantly improving heat dissipation, reducing unsprung mass, and enhancing overall braking consistency. Precision-Engineered for the Ultimate Track Weapon Built to handle the extreme braking loads of high-performance McLaren applications, Girodisc rotors are fully machined and assembled in the USA using aerospace-grade materials. The rotor hats are CNC-cut from 6061-T6 aluminum and anodized for durability, while the rings are cast from Girodisc’s proprietary high-carbon iron alloy. This advanced metallurgy ensures strength, thermal stability, and smooth pedal modulation even after repeated heat cycles. Girodisc A2-264 Vehicle Fitment McLaren 620R (2020+) McLaren 570S GT4 (rear fitment) McLaren 600LT (rear conversion fitment, verify caliper clearance) Features Direct OEM Replacement: Bolts directly to factory hubs and calipers—no modifications required. Lightweight Two-Piece Design: Reduces rotational mass and improves suspension response for sharper handling. Curved Vane Cooling: Directional internal vanes act as a centrifugal pump to move air through the disc and dissipate heat efficiently. Floating Mount System: Ten high-strength alloy drive pins and anti-noise spring washers allow controlled expansion while eliminating vibration or rattle. Replaceable Rotor Rings: The aluminum hats are reusable—only replace the iron rotor rings when worn. Made in the USA: Engineered, cast, and machined at Girodisc’s U.S. facility to motorsport standards. FAQs – Girodisc A2-264McLaren 620R Rear Rotors Are these rotors a direct fit for OEM calipers? Yes, they fit perfectly with the factory McLaren 620R calipers and mounting hardware. Do they improve cooling over stock rotors? Yes, the curved vane design and floating mount system drastically enhance cooling and prevent warping under high stress. Can they be used with performance pads? Absolutely. They’re compatible with both OEM and aftermarket racing pad compounds. Are they sold as a pair? Yes, Girodisc rotors are sold and priced per pair. Upgrade your McLaren 620R’s rear braking performance with Girodisc’s lightweight floating rotors. Built for endurance, precision, and confidence lap after lap—engineered to match the 620R’s race-bred character.

Girodisc 2-Piece Rear Brake Rotors – GT4 Clubsport The Girodisc A2-266 rear rotor set is a direct, bolt-on replacement for the OE cup car disc on the GT4 Clubsport platform. Using a lightweight aluminum hat and a proprietary cast-iron ring, these two-piece rotors reduce unsprung weight, improve cooling, and deliver repeatable performance under heavy track use while working perfectly with factory calipers and ABS. Race-bred construction, bolt-on simplicity Each rotor features a curved-vane internal design that pumps cooling air through the disc, managing temperatures during long stints. The floating mount uses high-strength alloy steel drive pins and anti-noise spring washers to allow axial and radial float, letting the ring expand with heat and self-center between the pads for consistent pedal feel. Features • Direct replacement for OE GT4 Clubsport rear discs• Two-piece design: proprietary cast-iron rings with 6061-T6 aluminum hats (U.S. sourced)• Curved-vane internal geometry for superior cooling• Floating drive-pin system with cadmium-plated hardware and class 12.9 cap screws• Anti-noise spring washers minimize rattle while allowing thermal growth• Reduced unsprung and rotational mass for sharper response• Rings are replaceable; reuse hats when the rings wear out• Sold/priced per pair Vehicle Fitment • Porsche Cayman GT4 Clubsport (981) – rear• Porsche 718 Cayman GT4 Clubsport (982) – rear• Note: If your car is equipped with OEM center-lock wheels, select the center-lock drive pin option. Girodisc A2-266 Rear Rotors – GT4 Clubsport FAQs Do these rotors fit with the stock calipers and ABS? Yes. They bolt on with no modifications and maintain factory brake bias and ABS functionality. What is the benefit of the two-piece floating design? It reduces weight, improves cooling, and allows the iron ring to expand under heat without coning or cracking, maintaining a consistent pedal with fewer hot spots. Are replacement rings available? Yes. When the rings are worn, simply replace the cast-iron rings and reuse the aluminum hats and hardware where applicable. How many drive pins are used? The A2-266 utilizes a high-strength floating system with multiple alloy steel pins and anti-noise spring washers to allow controlled float and quiet operation. Are these sold individually or as a set? Sold/priced per pair for the rear axle. What pads and fluid do you recommend? Pairing performance pads with a quality high-temperature fluid completes a reliable track package and helps prevent fade under extended use. Upgrade the rear brakes on your GT4 Clubsport with Girodisc A2-266 two-piece rotors for lighter weight, cooler running, and confidence-inspiring consistency every session.